Triple Density Floppy, Anyone?
(vogons.org)
Everybody knows about 3.5 inch HD 1.44MB floppies, first introduced in 1985 by NEC inside PC-8801 mkII MR(MR was afaik first computer with HD floppy, but 5.25 1.2MB one). West first heard about them from 10 November 1986 InfoWorld "Vendor Introduces Ultra High-Density Floppy Disk Media" https://books.google.com/books?id=rDwEAAAAMBAJ&pg=PA19 IBM followed in 1997 switching PS/2 to 2HD floppies, Apple in 1988. 80 tracks ~50KB/s speed.
Everybody knows about 3.5 inch HD 1.44MB floppies, first introduced in 1985 by NEC inside PC-8801 mkII MR(MR was afaik first computer with HD floppy, but 5.25 1.2MB one). West first heard about them from 10 November 1986 InfoWorld "Vendor Introduces Ultra High-Density Floppy Disk Media" https://books.google.com/books?id=rDwEAAAAMBAJ&pg=PA19 IBM followed in 1997 switching PS/2 to 2HD floppies, Apple in 1988. 80 tracks ~50KB/s speed.